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Orleans 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Orleans

Massachusetts, United States Of America

Long range weather outlook for Orleans includes 14 day forecast summary:

The next 14 day outlook for Orleans shows the average daytime maximum temperature will be around 18°C, with a high for the two weeks of 25°C expected on the afternoon of Thursday 23rd. The average minimum temperature will be 12°C, dipping to its lowest on the morning of Tuesday 21st at 10°C. Expect the following 14 days ahead to have mixed overhead conditions with some days dry and some seeing a significant amount of rain. It looks like Saturday 18th will have the most precipitation with an accumulation of around 2.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Fri 17
May		16:00

NE
NE

 16 / 19 mph 64 / 63°F 84% 1014 mb
Low level cloud: 10%
Mid level cloud: 16%
High level cloud: 5%
Most Significant Cloud Type: low
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

NE
NE

 15 / 18 mph 60 / 60°F 90% 1015 mb
Low level cloud: 97%
Mid level cloud: 44%
High level cloud: 14%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NE
NE

 19 / 22 mph 56 / 52°F 92% 1014 mb
Low level cloud: 99%
Mid level cloud: 46%
High level cloud: 66%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 18
May		01:00

NE
NE

 17 / 23 mph 52 / 46°F 95% 1014 mb
Low level cloud: 100%
Mid level cloud: 79%
High level cloud: 44%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NNE
NNE

 19 / 27 mph 51 / 45°F 96% 1014 mb
Low level cloud: 100%
Mid level cloud: 56%
High level cloud: 19%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NE
NE

 20 / 28 mph 51 / 45°F 95% 1015 mb
Low level cloud: 100%
Mid level cloud: 42%
High level cloud: 21%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

NE
NE

 19 / 22 mph 54 / 48°F 95% 1015 mb
Low level cloud: 100%
Mid level cloud: 86%
High level cloud: 90%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

NNE
NNE

 18 / 21 mph 56 / 51°F 95% 1015 mb
Low level cloud: 100%
Mid level cloud: 69%
High level cloud: 99%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NNE
NNE

 17 / 19 mph 56 / 52°F 95% 1015 mb
Low level cloud: 98%
Mid level cloud: 73%
High level cloud: 97%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

NNE
NNE

 17 / 19 mph 55 / 50°F 95% 1015 mb
Low level cloud: 94%
Mid level cloud: 59%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NNE
NNE

 16 / 18 mph 53 / 48°F 95% 1015 mb
Low level cloud: 100%
Mid level cloud: 78%
High level cloud: 35%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 19
May		01:00

NNE
NNE

 17 / 22 mph 51 / 46°F 94% 1014 mb
Low level cloud: 96%
Mid level cloud: 45%
High level cloud: 91%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NNE
NNE

 17 / 24 mph 50 / 45°F 94% 1014 mb
Low level cloud: 100%
Mid level cloud: 44%
High level cloud: 35%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NNE
NNE

 18 / 25 mph 51 / 45°F 94% 1015 mb
Low level cloud: 98%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

NNE
NNE

 16 / 18 mph 53 / 48°F 91% 1016 mb
Low level cloud: 99%
Mid level cloud: 31%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

NNE
NNE

 16 / 18 mph 55 / 50°F 92% 1016 mb
Low level cloud: 98%
Mid level cloud: 76%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NNE
NNE

 16 / 19 mph 55 / 51°F 90% 1016 mb
Low level cloud: 77%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
92%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

NE
NE

 15 / 17 mph 54 / 49°F 93% 1017 mb
Low level cloud: 88%
Mid level cloud: 26%
High level cloud: 0%
Most Significant Cloud Type: low
96%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NE
NE

 14 / 16 mph 52 / 47°F 92% 1017 mb
Low level cloud: 86%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: low
92%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 20
May		01:00

NNE
NNE

 11 / 13 mph 53 / 49°F 92% 1017 mb
Low level cloud: 100%
Mid level cloud: 37%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NNE
NNE

 12 / 17 mph 51 / 47°F 93% 1017 mb
Low level cloud: 97%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NE
NE

 11 / 18 mph 52 / 47°F 91% 1018 mb
Low level cloud: 74%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: low
79%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

NE
NE

 12 / 13 mph 56 / 52°F 84% 1018 mb
Low level cloud: 80%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: low
86%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

NNE
NNE

 11 / 12 mph 60 / 57°F 83% 1018 mb
Low level cloud: 25%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: low
29%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NE
NE

 9 / 10 mph 61 / 60°F 82% 1017 mb
Low level cloud: 8%
Mid level cloud: 5%
High level cloud: 4%
Most Significant Cloud Type: low
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

ENE
ENE

 4 / 5 mph 59 / 58°F 89% 1017 mb
Low level cloud: 10%
Mid level cloud: 1%
High level cloud: 2%
Most Significant Cloud Type: low
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SE
SE

 4 / 6 mph 55 / 54°F 91% 1017 mb
Low level cloud: 10%
Mid level cloud: 0%
High level cloud: 14%
Most Significant Cloud Type: low
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 21
May		01:00

SW
SW

 4 / 8 mph 51 / 49°F 92% 1016 mb
Low level cloud: 14%
Mid level cloud: 1%
High level cloud: 7%
Most Significant Cloud Type: low
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

WSW
WSW

 5 / 10 mph 50 / 49°F 92% 1016 mb
Low level cloud: 8%
Mid level cloud: 0%
High level cloud: 5%
Most Significant Cloud Type: low
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SSW
SSW

 5 / 6 mph 63 / 61°F 80% 1017 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

S
S

 11 / 12 mph 68 / 67°F 74% 1016 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

S
S

 13 / 15 mph 70 / 69°F 72% 1016 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SSW
SSW

 14 / 16 mph 66 / 65°F 77% 1015 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SSW
SSW

 15 / 29 mph 55 / 50°F 88% 1015 mb
Low level cloud: 2%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SW
SW

 15 / 28 mph 53 / 48°F 90% 1016 mb
Low level cloud: 5%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 22
May		01:00

SW
SW

 14 / 29 mph 52 / 48°F 90% 1015 mb
Low level cloud: 2%
Mid level cloud: 0%
High level cloud: 32%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SW
SW

 14 / 29 mph 53 / 49°F 89% 1014 mb
Low level cloud: 1%
Mid level cloud: 0%
High level cloud: 31%
Most Significant Cloud Type: high
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SW
SW

 15 / 26 mph 59 / 55°F 78% 1015 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 16%
Most Significant Cloud Type: high
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SSW
SSW

 16 / 18 mph 72 / 76°F 71% 1015 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SSW
SSW

 19 / 21 mph 71 / 70°F 71% 1014 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SW
SW

 19 / 21 mph 69 / 68°F 73% 1013 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 20%
Most Significant Cloud Type: high
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SSW
SSW

 19 / 38 mph 57 / 53°F 86% 1013 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SW
SW

 19 / 37 mph 57 / 53°F 86% 1013 mb
Low level cloud: 1%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 23
May		01:00

SW
SW

 18 / 22 mph 62 / 62°F 86% 1012 mb
Low level cloud: 1%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: medium
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SW
SW

 17 / 30 mph 59 / 56°F 89% 1011 mb
Low level cloud: 2%
Mid level cloud: 6%
High level cloud: 92%
Most Significant Cloud Type: medium
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SSW
SSW

 19 / 36 mph 60 / 59°F 82% 1011 mb
Low level cloud: 1%
Mid level cloud: 3%
High level cloud: 75%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SSW
SSW

 20 / 23 mph 69 / 68°F 77% 1010 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 3%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SSW
SSW

 21 / 24 mph 76 / 78°F 77% 1009 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 11%
Most Significant Cloud Type: medium
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SSW
SSW

 22 / 25 mph 77 / 79°F 80% 1007 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 6%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SSW
SSW

 23 / 27 mph 72 / 76°F 89% 1006 mb
Low level cloud: 22%
Mid level cloud: 9%
High level cloud: 93%
Most Significant Cloud Type: low
36%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SW
SW

 21 / 26 mph 65 / 65°F 96% 1006 mb
Low level cloud: 78%
Mid level cloud: 48%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Fri 24
May		01:00

WNW
WNW

 11 / 22 mph 61 / 61°F 79% 1014 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: medium
9%
0.0 In
07:00

SW
SW

 13 / 23 mph 63 / 63°F 73% 1008 mb
Low level cloud: 0%
Mid level cloud: 74%
High level cloud: 0%
Most Significant Cloud Type: medium
73%
0.0 In
13:00

SW
SW

 9 / 17 mph 74 / 77°F 55% 1011 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 99%
Most Significant Cloud Type: high
99%
0.0 In
19:00

SSW
SSW

 10 / 13 mph 71 / 71°F 72% 1015 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
0.0 In
Sat 25
May		01:00

NE
NE

 14 / 26 mph 52 / 47°F 85% 1018 mb
Low level cloud: 92%
Mid level cloud: 23%
High level cloud: 0%
Most Significant Cloud Type: low
99%
0.0 In
07:00

NW
NW

 14 / 17 mph 56 / 52°F 71% 1010 mb
Low level cloud: 8%
Mid level cloud: 46%
High level cloud: 21%
Most Significant Cloud Type: medium
68%
0.0 In
13:00

NNW
NNW

 6 / 11 mph 62 / 62°F 53% 1012 mb
Low level cloud: 0%
Mid level cloud: 30%
High level cloud: 0%
Most Significant Cloud Type: medium
29%
0.0 In
19:00

SW
SW

 10 / 14 mph 61 / 61°F 62% 1019 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
0.0 In
Sun 26
May		01:00

W
W

 10 / 19 mph 55 / 53°F 73% 1017 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 3%
Most Significant Cloud Type: medium
5%
0.0 In
07:00

NNE
NNE

 12 / 20 mph 55 / 52°F 74% 1024 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 22%
Most Significant Cloud Type: high
22%
0.0 In
13:00

NNE
NNE

 1 / 2 mph 64 / 64°F 51% 1021 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
19:00

WSW
WSW

 3 / 4 mph 61 / 61°F 61% 1023 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
0.0 In
Mon 27
May		01:00

SSW
SSW

 11 / 22 mph 59 / 60°F 79% 1022 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 32%
Most Significant Cloud Type: medium
3%
0.0 In
07:00

NNW
NNW

 5 / 9 mph 57 / 57°F 60% 1020 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 5%
Most Significant Cloud Type: medium
1%
0.0 In
13:00

S
S

 23 / 45 mph 65 / 65°F 84% 1016 mb
Low level cloud: 95%
Mid level cloud: 52%
High level cloud: 33%
Most Significant Cloud Type: low
100%
0.0 In
19:00

SSE
SSE

 8 / 16 mph 57 / 56°F 68% 1015 mb
Low level cloud: 0%
Mid level cloud: 60%
High level cloud: 0%
Most Significant Cloud Type: medium
59%
0.0 In
Tue 28
May		01:00

SSW
SSW

 15 / 31 mph 58 / 55°F 98% 1009 mb
Low level cloud: 94%
Mid level cloud: 23%
High level cloud: 26%
Most Significant Cloud Type: low
100%
0.2 In
07:00

E
E

 9 / 17 mph 58 / 56°F 66% 1013 mb
Low level cloud: 0%
Mid level cloud: 35%
High level cloud: 35%
Most Significant Cloud Type: medium
35%
0.0 In
13:00

W
W

 9 / 18 mph 71 / 71°F 60% 1009 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 8%
Most Significant Cloud Type: medium
8%
0.0 In
19:00

N
N

 6 / 11 mph 54 / 52°F 96% 1014 mb
Low level cloud: 99%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.2 In
Wed 29
May		01:00

NNW
NNW

 10 / 21 mph 59 / 60°F 80% 1014 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 46%
Most Significant Cloud Type: medium
10%
0.0 In
07:00

W
W

 4 / 6 mph 57 / 57°F 84% 1015 mb
Low level cloud: 9%
Mid level cloud: 2%
High level cloud: 44%
Most Significant Cloud Type: low
14%
0.0 In
13:00

NE
NE

 6 / 13 mph 63 / 63°F 50% 1017 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 6%
Most Significant Cloud Type: medium
3%
0.0 In
19:00

SSW
SSW

 12 / 16 mph 64 / 64°F 86% 1013 mb
Low level cloud: 1%
Mid level cloud: 44%
High level cloud: 14%
Most Significant Cloud Type: medium
49%
0.0 In
Thu 30
May		01:00

S
S

 7 / 15 mph 60 / 60°F 69% 1019 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 100%
Most Significant Cloud Type: medium
14%
0.0 In
07:00

S
S

 6 / 11 mph 57 / 56°F 98% 1013 mb
Low level cloud: 83%
Mid level cloud: 97%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.2 In
13:00

ESE
ESE

 9 / 19 mph 65 / 65°F 55% 1018 mb
Low level cloud: 0%
Mid level cloud: 43%
High level cloud: 100%
Most Significant Cloud Type: medium
47%
0.0 In
19:00

E
E

 5 / 7 mph 62 / 62°F 97% 1012 mb
Low level cloud: 66%
Mid level cloud: 18%
High level cloud: 10%
Most Significant Cloud Type: low
73%
0.2 In
Fri 31
May		01:00

NNE
NNE

 16 / 33 mph 54 / 50°F 80% 1016 mb
Low level cloud: 0%
Mid level cloud: 84%
High level cloud: 0%
Most Significant Cloud Type: medium
83%
0.0 In
07:00

SSE
SSE

 10 / 15 mph 54 / 52°F 95% 1013 mb
Low level cloud: 87%
Mid level cloud: 44%
High level cloud: 91%
Most Significant Cloud Type: low
100%
0.0 In
13:00

NE
NE

 23 / 49 mph 56 / 52°F 87% 1019 mb
Low level cloud: 80%
Mid level cloud: 31%
High level cloud: 7%
Most Significant Cloud Type: low
91%
0.1 In
19:00

S
S

 6 / 9 mph 60 / 60°F 94% 1011 mb
Low level cloud: 65%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
68%
0.1 In
Sat 01
Jun		01:00

E
E

 32 / 66 mph 53 / 46°F 95% 1019 mb
Low level cloud: 100%
Mid level cloud: 79%
High level cloud: 3%
Most Significant Cloud Type: low
100%
0.6 In
07:00

SSW
SSW

 11 / 16 mph 63 / 63°F 89% 1010 mb
Low level cloud: 40%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
45%
0.0 In
13:00

ENE
ENE

 31 / 65 mph 58 / 53°F 90% 1022 mb
Low level cloud: 100%
Mid level cloud: 60%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.8 In
19:00

SW
SW

 16 / 28 mph 59 / 55°F 81% 1010 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 15%
Most Significant Cloud Type: high
15%
0.0 In

The day label given represents the local day relative to the local time for the location you are looking at.
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Day

This time is corrected for local time zones and where possible for daylight saving times.
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Local Time

The wind direction we use on this page is the direction the wind is coming from, given in a 16 point compass format.
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Dir

This refers to the sustained average wind speed, normally averaged over a period of 10 minutes for up to 3 hrs.
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Speed/
Gust

Temperature from our forecast perspective are fairly well defined, they are what we would expect to measure in a standard meteorological screen (in other words, shaded and well ventilated) at 2 metres above ground level.
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Temp/
Feels Like

The relative humidity is the percent of saturation humidity, generally calculated in relation to saturated vapour density.
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Humidity

The value given is a total predicted for the previous 3 hrs and includes the time of the forecast being looked at.
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Precip Amount

The total amount of cloud as a percentage is derived from looking at cloud cover throughout the atmosphere and estimating how these combine when looked at from the ground.
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Cloud Amount

Here we try to capture the feel of the weather as an image – it will never be perfect but is useful for a quick overview.
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Weather

When we measure for forecast air pressure we are normally doing this relative to a certain height and most commonly relative to Mean Sea Level.
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Pressure